Paper cup and blank for making the same



v ,1933. nun cur m Bum: r01; nummc rus suns Re. 18,809 I will! 0am efiar ert folded condition.

Reissued May 2, 1933 UNITED STATES cEsAIm BARBIERI, on NEW Yoax, N. in,

Assrcmois 'ro vonrnx our COMPANY, A

CORPORATION 01? DELAWARE PAPER CUP AND BLANK FOR MAkING SAME Original in). 1,632,868, dated June 21, 1927, Serial No. 617,672, flied February 8, 1923. Application for reissue filed October 16, 1930. Serial No. 489,216.

This invention relates to flat folded paper cups of a general sector shape. It is an 1mprovement on the invention shown in my application Serial No. 572,518, filed July 3, 1922, for a paper cup.

It is an object of this invention to present a paper cup of a better appearance.

It is a further object of this invention to devise a paper cup, which shall require less accuracy in the manufacture thereof.

It is a further object of this invention to 'produce a paper cup in which the turnedover end at the bottom shall not make anabrupt shoulder in the surface of the cup.

Other and further important ob ects of this invention will be apparent from the disclosures in the specification and the accom-' panying drawing.

' The invention (in a preferred form) 1s i1; lustrated in the drawing .and hereinafter more fully described.

On the drawing:

Figure 1 is a side view of the cup.

Figure 2 is a view, upon a somewhat smaller scale, of one side of the cup in partly Figure 3 is a view of-the blank from which the cup is made.

Figure 4 is a view of the other side of the cup in the partially folded condition shown in Figure 2.

Figure 5 is a section upon an enlarged scale on the line 55 of Figure 1.

As shown on the drawing:

The cup 10 is of the general form of a sec tor, except that its point is turned over.

- The blanks of which the cups are made have an arcuate edge 11 and a radial edge 12. The other straight edge 13 of the blank, instead of being a radius, is parallel but spaced away from a radius so as to provide a flap.

The lower end of the flap 13 is cut at an angle to make a straight edge 17 in line with the edge 12. Between the edge 12 and the edge 17 the blank has a notch so that the center of curvature of the edge 11 is not within thebody of the blankbut in this notch. The sector bounded by the radii12 and 16 has a straight edge 18 between it and the notch. In the same way the sector edge 19 between it and the notch. The flap 13, however, instead of having a straight edge separating it from the notch, has a rounded edge, as shown at 20. This rounded end of the flap extends beyond the straight line which, if it were present, would corre spond to the lines 18 and 19.

Along the flap 13 is a strip of adhesive material 21 which goes to secure the flap 13 against the surface of the blank near the edge 12 when the cup is being formed. As illustrated, this strip of adhesive stops at the line 23. which, as explained below, is the location of a fold, but the adhesive may, if desired, be continued beyond this line.

The blank is intended to be folded along the radius 15 which separates the flap from A the sector proper. Another foldis along the .three thicknesses are folded in this last folding, the line 23 in the flat blank would show as a broken line having three straight parts.

The several folds may be provided for in the blank by score'marks, creases or any other of the usual means, or the blank may be entirely uniform and the folding done without the assistance of such lines.

The adhesive 22 may be applied to the cup 1 when it is in the condition shown in Figure 4, or may be applied to the fiat-blank before any of the foldings are made. If the latter is done, the adhesive 22 will be on the opposite face of the blank from that shown in Figure 3.

Although the adhesive 22 is'illustrated as applied to the portion. below the line 23 in Figure '4, it isobvious that an equally effective joint may be obtained by applying-the adhesive above said line. I I tends beyond the fold 23, it holds the ply at If the adhesive 21 exthe point of the cup, which in Figure 5 is illustrated'as the top ply, in place. If, however, the adhesive does not extend past the fold 23, this ply will be fiat because held by folds at two edges 15 and 23.

After the adhesive is applied and the fold on the line 23 made, pressure is applied to the folded cup to insure that the joints made by the adhesive will be firm. This pressure causes the part 25, which is that portion of the curved part- 20 that projects beyond the edges 18 and 19, to become bent as shown in Figure 5. The pressure used to insure that the joint will be firm is large enough and lasts long enough to make the bend in the paper permanent. The cups, after being folded and cemented as described, are ordinarily arranged in piles and the weight of the super: posed cups assists in holding the parts 25 in the bent position until the paper becomesset in this position.

If rounded ends, like the end 20, were provided instead of the straight ends 18 and 19, it would be necessary to fold the cup very accurately; otherwise, the rounded edges would fail to be in register and by projecting at one side or the other would cause an unsightly appearance in the finished cup. Also, if the rounded ends were not removed at the edges 18 and 19, they would be between the portion 25 and the body ofthe cup, making it impossible for this portion to slope downward as shown in Figure 5. The sloping character of this portion makes the edge of the bent-up part a bevel instead of a shoulder. Consequently, whena cup is withdrawn from a stack of cups by a dispensing machine, there is no shoulder likely to catch upon the other cups or on certain arts of themachine and so make trouble. ups provided with sloping parts 25 are therefore more readily used with dispensing machines.

I am aware that numerous details of construetion may be varied through a wide range without departing from the principles of this invention, and I therefore do not'purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. In a blank for paper cups, a generally sector-shaped body, a flap along one radical side of said body, said body having a notch at the meeting point of said flap and the other radial edge, said notch having twov straight edges and one convexed edge, that portion of the blank embodying said edges adpated to be folded over onto the body of the blank.

2. In a blank for paper cups, a generally sector-shaped body, a flap along one radial side of the body, said body having a notch at the meeting point of'said flap and the other radial edge, said notch having two straight edges separating it from the body of v the blank, and a curvilinear edge separating it from saidflap.

3. A sector-shaped cup, embodying a turned-up end at the point of the cup comprising a plurality of superimposed layers of material of substantially equal area, and an exterior layer slightly longer than the others so as to project beyond the underlying layers, said cup being made 'from a sector-shaped blank having outwardly diverging substantially straight side edges terminating at their outer ends in a curved outer edge and at their inner ends in a fold-up tions having a flap-like extension and constituting said exterior slightly longer layer, said three transverse lines (if-fold being of substantially the same length.

4. A sector-shaped cup, embodying a turned-up end at the point of the cup comprising a plurality of superimposed layers of material of substantially equal area, and an exterior layer slightly longer than the others so as to project beyond the underl ing layers, said end being turned upwardly: out

transverse lines of fold in said layers of material and said transverse lines of fold in said layers being of substantially the same length. r

5. A sector-shaped cup, embodying a turned-up end at the point of the cup comprising a plurality of superimposed layers of material of substantially equal area, and an exterior layer slightly longer than the others so as to project beyond the underlying layers, said end being turned upwardly about transverse lines of fold in said layers of material and saidtransverse lines of fold in said layers being of substantially thesame length, said exterior layer including a small rounded centrally disposed tip having converging sides and so located that in the completed cup it terminates beyond said layers.

In testimony whereof, I have hereunto subscribed my name at Washington, D. C.

OESARE BARBIERI. 

